Homma Shinji
Division of Organ Physiology, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University Faculty of Medicine, Niigata, Japan.
J Smooth Muscle Res. 2009 Dec;45(6):299-306. doi: 10.1540/jsmr.45.299.
Local differences in the electrogastrographic (EGG) indices were studied. The indices include the spectral frequency, the instability factor (IF) of the spectral frequency, and the power content in addition to the usual power amplitude of 5 frequency groups as follows: the 1-cpm group (0-2.4), the 3-cpm group (2.5-4.9), the 6-cpm group (5.0-7.4), the 8-cpm group (7.5-9.9), and the 10-cpm group (10.0-12.9). In general, the infraumbilical frequency and the IF of both of the 3- and 6-cpm groups were higher than those of the epigastric frequencies. In contrast, both the epigastric power amplitude and the power content of the 3- and 6-cpm groups were higher than those of the infraumbilical ones. Mapping of the absolute power amplitude and superimposing the maximal power foci further visualized and clarified the local differences in the epigastric and infraumbilical myoelectrical activity, especially of gastric and colonic activity.
研究了胃电图（EGG）指标的局部差异。这些指标包括频谱频率、频谱频率的不稳定因子（IF）、功率含量，以及如下5个频率组的常规功率幅值：1次/分钟组（0 - 2.4）、3次/分钟组（2.5 - 4.9）、6次/分钟组（5.0 - 7.4）、8次/分钟组（7.5 - 9.9）和10次/分钟组（10.0 - 12.9）。一般来说，3次/分钟组和6次/分钟组的脐下频率及IF均高于上腹部频率。相反，3次/分钟组和6次/分钟组的上腹部功率幅值及功率含量均高于脐下组。绘制绝对功率幅值图并叠加最大功率焦点，进一步直观显示并明确了上腹部和脐下肌电活动的局部差异，尤其是胃和结肠活动的差异。
